Extension-strip for window-shade rollers



(No Model.) A. B. DUNKLE. g EXTENSION STRIP FOR WINDOW SHADE ROLLERS.

No. 398,137. Patented Feb. 19, I889.

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ABRAM B. DUNKLE, OF STEELTON, PENNSYLVANIA.

EXTENSION-=STRIP FOR WlNDQW-SHADE ROLLERS.

SPECIFICATION forming part of Letters Patent No. 398,137, dated February19, 1889.

Application filed February 23, 1888. Serial No. 264,913. (No model.)

brackets may be attached without the ordinary means of securing them,whereby the said brackets are supported without the ne cessity ofattaching them directly to the windew-frame.

It is my object, further, to provide an improved strip which may beextended to suit windows of different widths.

\Vith these objects in view the invention consists in a certain. novelconstruction and arrangement of devices, fully set forth hereinafter inconnection with the accompanying drawings, wherein Figure 1 is aperspective view of the strip with the roller-brackets attached thereto.Fig. 2 a longitudinal central sectional view of the same. Fig. 3 is avertical transverse sectional view on the line as a: of Fig. 2. Fig. 4is a plan view of the extension-strip with the roller-brackets removed.Fig. 5 is a detail view of the catch.

Referring to the drawings, A designates the extension strip, whichcomprises the sliding sections B B, both of which are provided on theirupper and lower edges with the inclined grooves or channels C O. Theextension or face plate D is attached rigidly to the section 13, and isprovided at its upper and lower edges with the inclined flanges E E,mounted or engaging in the said grooves or channels. This extension orface plate extends beyond the inner end of the section B and slides onthe face or outer side of the section 13, its flanges engaging andsliding in the grooves or channels in the edges of the said section. Itwill be seen that the extension-strip presents the same appearance infront at all adjustments, for the reason that the extension or faceplate covers the joint between the sections.

a represents a catch or clamp, which conin the swinging arm I), pivotedto the rear side of the section B ,and the spring-jaw c on the free endof the said arm, which is adapted to engage over the upper edge of thesaid section and the upper edge of the sliding or extension plate,whereby they are pressed tightly together, so that the frictionalcontact prevents independent movement. The jaw is preferably formedintegral with the swinging arm, but may be formed separate and attached.The catch is shown in its operative or locking position in Figs. 1 andl, and is shown in dotted lines in the raised position in Fig. 4:. henthe catch is raised, the sections may be relatively adjusted as beforedescribed.

The outer ends of the sections are provided with. rabbets or recesscsFF. Metallic straps G G are secured around the ends of the sections, thusforming flanges ll H on the lower and outer sides of the said rabbets orre cesses, which flanges project out flush with the face of the strip A;and I I represent flat plates, which are secured to the face or frontside of the strip and project outwardly over the rabbets or recesses towithin a short distance of the flanges on the outer sides of the saidrabbets or recesses.

It will be seen that the flanges and plates above described inelose therabbets or recesses on all sides except the upper, and leave narrowslots L L adj acentto the outer flanges, and therefore it is obviousthat pockets K K are formed at the ends of the extension-strip andprovided with communicating vertical slots.

The roller-brackets M M, which are shown in connection with thisinvention to illustrate its operation, consist of a shank, N, having ahead, 0, 011 its outer end, provided with a bearing or a notch. andapertured ears, P P, on its inner end. The shank engages or passesthrough the vertical slot L, and the apertnred ears fit in the pocket,thus securely attaching the brackets to the extension-bar.

It will be understood that any ordinary brackets having the generalshape above described maybe attached to my improved bar, and if thebracket is provided with ears on both sides, instead of on one only, asshown, the slot L may be placed in the center of the pocket, instead ofat the outer side, as shown.

This may be accomplished in a variety of ways-for instance, by providingthe upper edges of the outer flanges with inward-extending lips orleaves to meet the projecting plate above described.

I do not wish to be understood as limiting myself to the exactconstruction of the pocket as herein described and shown, as, forinstance, the pocket may be formed by channeling the end of theextension-strip, or the pocket and slot may be formed in a casting andattached to the strip, or the-flanges herein described may be formedintegral with the strip, instead of being attached, as above described.

The advantages of the invention will b apparent. The extension-strip isprovided with apertures R R, to receive screws to secure the strip tothe frame of the window; and it is evident that it is easier to attachthe brackets to a strip and then secure the strip to the frame than itis to secure the brackets separately to the frame. Further, the latteror ordinary practice necessitates a greater mutilation of the frame.Further, it is often difficult to place the brackets at the properdistance apart to suit the length of the roller; but when the improvedextension-strip is employed this is easily accomplished. The bracketsare arranged in their pockets, the roller is applied thereto, and theextensionstrip adjusted to the proper length and locked. The bracketsare now removed from the strip, and the latter is secured in the properposi tion to the frame, after which the brackets may be replaced and theroller applied thereto.

The detachment of the shade-roller from the frame may be accomplishedsimply by raising the brackets out of the pockets provided thereforwithout removing the trunnions of the roller from the brackets.

To adjust the extension-plate on the sections it is necessary to passthe inclined flanges of the former into the inclined grooves of thelatter by inserting them at the ends thereof, and when secured thus inplace it will be evident that the plate cannot be removed from thesection without drawing the flanges directly out of the grooves in thesame way as they were inserted. It is impossible to bend the flanges up,and thus remove them, as may be done with flanges which embrace theupper and lower edges of the sections, and therefore there is no dangerthat the sections will become separated. The flanges of theextension-plate, as will be understood, are concealed, and thereforeprotected, and no sharp edges are exposed to tear or othewise injure thehangings of the window or the hands of those adjusting the same.

Having thus described claim 1. In an extension-strip for window-shaderollers, the wooden sections B B, having inclined grooves or channelsalong their upper and lower edges, and the metallic extension or faceplate D, secured rigidly to one section and having inclined flanges atits upper and lower edges working in the inclined grooves my invention,I

of the other section, said extension or face plate spanning the spacebetween the adjoining separated ends of the two sections, so as to coverthis space and make the strip have all the appearance of an ordinaryone.

2. In an extension-strip for window-shade rollers, the wooden stripdivided into sections B B, carrying the roller-brackets at the ends, andthe metallic extension or face plate D, rigidly affixed to one sectionand having flanges along its upper and lower edges to engage the upperand lower edges of the other section, and said extension or face platebe ing arranged along the front face of the strip and spanning the spaceseparating the adjoining ends of the sections,whereby this space isconcealed and the strip is given the appear ance of an ordinary one, asset forth.

3. I11 an extension-strip for window-shade rollers, the wooden stripdivided into sections B B, carrying the roller-bracket at the ends, andthe metallic extension or face plate D, rigidly affixed to one sectionand having flanges along its upper and lower edges to engage the upperand lower edges of the other section, and said extension or face platebeing arranged along the front face of the strip and spanning the spaceseparating the adjoining ends of the sections, whereby this space isconcealed and the strip is given the appearance of an ordinary one, andthe clamp to or locking device arranged 011 the section over which theextension-plate slides, so as to clamp the free end of the said plate,as set forth.

4. The combination, in a shade-roller strip, of the grooved or channeledsection B, the section B, having an extension or face plate providedwith flanges engaging in the grooves of the section B, and the catch orclamp a, pivoted to the section B, andhaving a springjaw, c, engagingthe upper edges of the section and the extension or face plate mountedthereon, whereby they are locked together, substantially as and for thepurpose specified.

5. The strip for shade-rollers, having rabbets or recesses in its ends,flanges on the sides of the rabbets or recesses, and the projectingplates overhanging the rabbets or recesses, substantially as and for thepurpose specified.

6. The strip for shade-rollers, having rabbets or recesses in its ends,the straps G G, embracing the ends of the strip and projecting outwardto form the flanges H H on the outer and lower sides of the rabbets orrecesses, and the plates I I, secured to the face of the strip andprojecting outward over the said rabbets or recesses to form the pocketsK K and the slots L L, all constructed and arranged substantially asspecified.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

IVitnesses: ABRAM B. DUNKLE.

JOHN B. HooPEs, JACOB REIGART.

